Name

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DB_OR

Purpose

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Combine two vectors of entry numbers, removing duplicate values.

Explanation

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DB_OR can also be used to remove duplicate values from any longword
vector

Calling Sequence

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LIST = DB_OR( LIST1 ) ;Remove duplicate values from LIST1
or
LIST = DB_OR( LIST1, LIST2 ) ;Concatenate LIST1 and LIST2, remove dups

Inputs

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LIST1, LIST2 - Vectors containing entry numbers, must be non-negative
integers or longwords.

Output

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LIST - Vector containing entry numbers in either LIST1 or LIST2
 

Method

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DB_OR returns where the histogram of the entry vectors is non-zero

Procedure Calls

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ZPARCHECK - checks parameters

Revision History

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Written, W. Landsman February, 1989
Check for degenerate values W.L. February, 1993
Converted to IDL V5.0 W. Landsman September 1997